US1192470A - Ball-bearing. - Google Patents

Description

F.v STARIN. BALL BEARING.

lMFLICM'IGH FILED JUNE 26. 1915* y l 91 92,457; n www@ my 1916.

2 SHEETSnSHEET i.

www@ j?? f. Smm. BALL BEARING.

A PLICATObf FILED JUN26. 1915. )l l mmm July 1916.

2 SHEETS-SHEET 2.

mamey FRANK STABU?, 0F SPRNGFIELI?, liSSAC/HUSETTS.

BLLwBEARING..

mums

Specification of Letters Patent.

.application filed J une E6, 19l5r Serial No. 36,529.

stitute with the balls retained and separated thereby an assembled unit. The retaining devices and their support 'will be termed vhereinafter the cage, Heretofore, as far as lniovvn, the balls were placed one at a time into the ball racevvays, and the retainw` ing members Were assembled in the racevvays with the support to form a cage. The assembling under the conditions stated takes considerable time, requires great skill and is very difficult in view of the fact that great care must be taken in order to insure a proper alinement of the coperating parts.

One of the objects of the present invention is to provide a ball bearing, into the raceways of which an assembled cage with the balls therein may be conveniently inserted as a unit, thereby obviating the defects men+ tioned of the ball bearings heretofore in use.

Another object of the invention is to form the cage in such amanner that undue frietion is prevented between the balls and the said cage.

A further object of the invention is to so construct the bearing rings 'that they can be conveniently finished, that is to say ground and polished, in two operations. Y

With these and other objects in view, which Will more fully appear as the nature of the invention is better understood, the same consists in the combination, arrangement and construction ci' parts hereinafterl fully described, pointed out in the append ed claim and illustrated in the accompanying drawings, it being understood thatfnany changes may be made in the size andpio portion of the several parts and details of construction within the scope of the appended claim Without departing from the spirit' or sacrificing any of the advantages oi the lnventwn.

One of the many possible embodiments of the invention is illustrated. in the accompanying drawings, in which :W

Figure 1 is a central vertical section taken through a ball bearing constructed in accordance with the present invention; Fig. 2 is a front elevation thereof; nig. 3 is a section taken on line 3-3 of Fig. 1; Fig. i is a section taken through one of the separaw torsylig. 5 is a perspective view of said separator; Fig. 6 is a vertical longitudinal section taken through a chuck used in grinding and polishingthe outer "Wearing ring, the latter being in operative position there on; Fig. 7 is a section taken on line 7-7 of Fig. 6; Fig. 8 is a vertical longitudinal sec- Patenten een tion taken through a chuck for finishing the inner bearing ring, the latter being shown; thereon in operative position; Fig. @is section taken on line 5)*9 of Fig. 8; Fig. 10 is a section taken through a mo-dication of the chuck for holding the outer bearing ring; and Fig, il is a similar section taken through a niodiiicationfo a chuck coperating with the inner bearing ring.

Referring now more particularly to Figs.

l to 5, inclusive, the numeral 2O indicates the inner bearing ring, having a bore 21, by

which the said ringinay be secured in any approved manner to an axle or shaft 22. The ring may rest against a shoulder 23 on the said axle or shaft, and is provided with a raceway 24., in alinement with the racen Way 25 of an outer bearing' ring 26. The

ring 26 abuts against a shoulder 27 on a stationary part of the device, to which the ball bearing is applied, more particularly that side of the ring 26 isin abutment with the shoulder 27 whichI is opposite to that side of the ring ZO which rests against the shoulder E23 on the shaft. The raeevvayI of the inner bearing vring .is of the usual scnliguration, to Wit: of curved cross sections :neral E29) of its curved portion toward that side of the ring which is opposite to the side abutting against the shoulder 27.

The cage comprises a ringshaped niember 30, which is disposed transversely of and y, before the bearing is properly assembled.

The ends of each U-shaped plate member are provided, with lugs 33, by means of which the said retaining element is attached to the supporting ring 30. For this purpose the said supporting ring is provided with radial slots 34, in each of the same being seated tivo juxtaposed lugs 38 of two adjoining plate members 31, the said lugs being bent upon the outer face of the supporting ring, as clearly shown in Figs. 1 to 3, inclusive. The plate members 3l are made of comparatively soft material, for instance brass, and preferably formed by stamping. ln the inner face of the base 32 of each plate member is formed a slight depression and in alinement therewith is made in the supporting ring a similar depression 36. Each plate member loosely embraces a ball, such ball being seated in the registering depressions in the plate member and in the supporting ring. It is to be observed that the balls do not Contact With the sides 37 ofthe plate members 31, but only With the depressions 35 in the bases thereof and with the depressions in the ring 30; friction between the balls, their retaining members and the supporting ring is, therefore, effectively prevented. The plate members 3l extend transversely of the raceways, and are disposed at an angle to the longitudinal axis of the shaft 22 in order to have the edges of their sides 37 disposed substantially equi-distantly from the racevvays. This arrangement becomes necessary in view of the straight portion of one of the raceways. Obviously if the plate members were arranged parallel to the longitudinal axis of the shaft, their edges would not be disposed equidstantly from the racevvays, and, therefore, co ld not y support properly the bearing balls.

'In the outer face of the 'inner bearing ring are formed two annular recesses, indicated at 38 and 39, said recesses extending rfrom the sides of the ring toward the race- Wavpwhereby shoulders 40. are formed on both sides of the raceway. ln a similar manner are provided in. the inner face of thel outer bearing ring annular recesses 41 and v42 and shoulders 43. The purpose of this arrangement Will be explained hereinafter. y

From the foregoing it appears that the cage 'with the balls therein constitutes an asmaar@ sembled unit; its parts can be easily 'put together upon the inner bearing ring, and the outer bearing ring can be slid, after assembling, over the cage. Ubviously, the assembling of the cage can thus be more easily effected than in the bearings heretofore in,

holding the said ring properly upon the said chuck. A grinding Wheel 46 serves t0 finish the outer face of the ring and the side 47 thereof, and a' grinding wheel 48 the raceivay of/the saine. After this operation the chuck is inserted into the recess 4l of the ring, and the grinding Wheel 46 used to grind and polish the side 49 of the same. The inner bearing ring is mounted upon a chuck 50, (Figs. 8 and that first engages the recess 39 therein, a compression member 5l assuring a proper gripping of the jaws of said chuck. A Wheel 52 grinds and polishes thepinner'face of this ring and its side 53, and a wheel 54 the raceway of the same. rlhe chuck is then engaged with the recess 38 in said ring, and the grinding Wheel 52 used to finish the side 55 thereof.

In the device described above, the sides of the recesses in the bearing rings form part of a cylindrical surface. ln the modification shown in Figs. l() and il of the drawings the sides of the recesses are conical. The chucks must, therefore, be shaped correspondingly. By this construction a better grip on the rings is obtained with lessl Work.

lt is to be observed that, ivhileherein the outer bearing ring has been disclosed as having araceway provided ivith a straight portion and the inneifrng a raceway having a curved cross section, this arrangement could be reversed Without 4departing from the invention. In the appended claim the eX- treme diameterlof the unit, that' isfto say of the vassembled cage and balls therein, refers to either the largest or smallest diameter, or in other Words to the outer or inner diameter.

l/Vhat l vclaim is ln a ball bearing, the-combination with two bearing rings having ra'ceways, one of said raceivays beingof curved cross section and the. other one having a curved portion and a straight portion running from 4the curved portion toward one of the sides of the respective. rings, balls running in said' raceivays, a supporting ring disposed outside of said raceivays, and a plurality of U- shaped ball retaining ,members embracing Said balls and being attached to said sup porting ring, said retaining membersexn Signed at Springfield, in th@ county of tending at an acute ange to the longtuinaly Hampden and State of Massachusetts, this 16 abras 0f said bearing rings, said supporting 23rd day of June, A. D. 1915.

a'uut5 and the diameter of said straight porring, Retaining members and balls forming FRANK STA-RIN tion of ong-of the racewafys being equal to Vtnesses:

'one of th@ extreme diameters of the unit WINFIELD S. LEE,

thezenvf LADIsLAUs MARKUS.

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